. 2015 Aug 25;4:623. [Version 1] doi: 10.12688/f1000research.6716.1

Table 1. The results of extraction-photometric determination of iron(II) in biological fluids (concentration of 1-nitroso-2-naphthol, 1×10 ^-4 M, pH 4.8, t = 15 min, l = 1.0 cm, n = 3, P = 0.95).

Sample	Blood plasma (µg/mL)	RSD	Blood serum (µg/mL)	RSD
CPE procedure	1.71 ± 0.24	0.06	1.32 ± 0.17	0.05
Reference method	1.74 ± 0.16 ^a	0.05 ^a	1.34 ± 0.29 ^b	0.09 ^b

^a ICP-MS

^b Reference protocol with bathophenanthroline

Table 1. The results of extraction-photometric determination of iron(II) in biological fluids (concentration of 1-nitroso-2-naphthol, 1×10 -4 M, pH 4.8, t = 15 min, l = 1.0 cm, n = 3, P = 0.95).